Soul music is a popular music genre that originated in the United States in the 1950s and early 1960s, combining elements of African American gospel music and rhythm and blues. According to the Rock and Roll Hall of Fame, soul is "music that arose out of the black experience in America through the transmutation of gospel and rhythm & blues into a form of funky, secular testifying." Catchy rhythms, stressed by handclaps and extemporaneous body moves, are an important feature of soul music. Other characteristics are a call and response between the soloist and the chorus, and an especially tense vocal sound. The style also occasionally uses improvisational additions, twirls and auxiliary sounds.